2020_2021学年高中英语Module4GreatScientistsFunctionandGrammar课时作业含解析外研版必修4.doc

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1、Module4GreatScientistsⅠ.阅读理解Youmaythinkthatsailingisadifficultsport,butitisreallynothardtolearn.Youdonotneedtobestrong,butyouneedtobequick.Andyouneedtounderstandafewbasicrulesaboutthewind.First,youmustaskyourself,“Whereisthewindcomingfrom?Isitcomingfromaheadorbehindorfro

2、mtheside？”Youmustthinkaboutthisallthetimeontheboat.Thewinddirectiontellsyouwhattodowiththesail.Let'sstartwiththewindblowingfrombehind.Thismeansthewindandtheboataregoinginthesamedirection.Thenyoumustalwayskeepthesailoutsidetheboat.Itshouldbeata90°angle(角)totheboat.Thenitw

3、illcatchthewindbest.Ifthewindisblowingfromtheside,itisblowingacrosstheboat.Inthiscase,youmustkeephalfofthesailoutsidetheboat.Itshouldbeata45°angletotheboat.Itneedstobeoutfarenoughtocatchthewind,butitshouldn'tflap(摆动)orlooklikeaflagonaflagpole.Ifitisflapping,itisprobablyo

4、uttoofar,andtheboatwillslowdown.Sailingagainstthewindisnotimpossible.Ifyoutry,thesailwillflapandtheboatwillstop.Youmaywanttogointhatdirection.Itispossible,butyoucan'tgoinastraightline.Youmustgofirstinonedirectionandtheninanother.Thisiscalledtacking(抢风航行).Whenyouaretackin

5、g,youmustalwayskeepthesailinsidetheboat.本文是一篇说明文，介绍了帆船运动的一些常识。进行帆船运动必须要注意风向，因为风向决定着要如何操纵船帆。1．Whatshouldyouconsiderfirstwhilesailing?A．Sailors'strength.　　　B．Wavelevels.C．Winddirections.D．Sizeofsails.答案：C解析：细节理解题。根据第二段中的“First，youmustaskyourself，‘Whereisthewindcomingfrom？I

6、sitcomingfromaheadorbehindorfromtheside？’”，可知，风向是进行帆船运动很重要的因素。2．Whatdoestheunderlinedword“It”inParagraph4referto?A．Theboat.B．Thewind.C．Thesail.D．Theangle.答案：C解析：代词指代题。根据文章第四段中的“youmustkeephalfofthesailoutsidetheboat.Itshouldbeata45°angletotheboat.Itneedstobeoutfarenought

7、ocatchthewind，butitshouldn'tflap(摆动)”可知，It指代的是船帆。3．Whatdoyouhavetodowhensailingagainstthewind?A．Moveinastraightline.B．Allowthesailtoflap.C．Lowerthesail.D．Tacktheboat.答案：D解析：推理判断题。根据文章最后一段中的“Itispossible，butyoucan'tgoinastraightline.Youmustgofirstinonedirectionandtheninan

8、other.Thisiscalledtacking(抢风航行)．”可知，逆风行驶的时候需要改变航向，这叫作tacking。故推断，逆风行驶时要tacktheboat(使船曲折航行)。4．Wherecanyo